Sunrise and Sunset times in Parnaiba, Brazil 
Parnaiba
Piauí
Time zone: America/Fortaleza, UTC -3 h.
Latitude: -2.91, Longitude: -41.77
138 008 people
| Date | Sunrise | Solar Noon | Sunset | Length of day |
|---|---|---|---|---|
| 2025-Jul-01, Tuesday | 05:52:20 | 11:51:03 | 17:49:46 | 11h 57m 26s |
| 2025-Jul-02, Wednesday | 05:52:30 | 11:51:14 | 17:49:58 | 11h 57m 28s |
| 2025-Jul-03, Thursday | 05:52:40 | 11:51:25 | 17:50:10 | 11h 57m 30s |
| 2025-Jul-04, Friday | 05:52:49 | 11:51:36 | 17:50:22 | 11h 57m 33s |
| 2025-Jul-05, Saturday | 05:52:59 | 11:51:46 | 17:50:34 | 11h 57m 35s |
| 2025-Jul-06, Sunday | 05:53:07 | 11:51:56 | 17:50:45 | 11h 57m 38s |
| 2025-Jul-07, Monday | 05:53:16 | 11:52:06 | 17:50:56 | 11h 57m 40s |
| 2025-Jul-08, Tuesday | 05:53:23 | 11:52:15 | 17:51:07 | 11h 57m 44s |
| 2025-Jul-09, Wednesday | 05:53:31 | 11:52:24 | 17:51:17 | 11h 57m 46s |
| 2025-Jul-10, Thursday | 05:53:37 | 11:52:32 | 17:51:27 | 11h 57m 50s |
| 2025-Jul-11, Friday | 05:53:44 | 11:52:40 | 17:51:37 | 11h 57m 53s |
| 2025-Jul-12, Saturday | 05:53:49 | 11:52:48 | 17:51:46 | 11h 57m 57s |
| 2025-Jul-13, Sunday | 05:53:55 | 11:52:55 | 17:51:55 | 11h 58m 0s |
| 2025-Jul-14, Monday | 05:53:59 | 11:53:01 | 17:52:04 | 11h 58m 5s |
| 2025-Jul-15, Tuesday | 05:54:03 | 11:53:07 | 17:52:12 | 11h 58m 9s |
| 2025-Jul-16, Wednesday | 05:54:07 | 11:53:13 | 17:52:19 | 11h 58m 12s |
| 2025-Jul-17, Thursday | 05:54:10 | 11:53:18 | 17:52:26 | 11h 58m 16s |
| 2025-Jul-18, Friday | 05:54:12 | 11:53:22 | 17:52:33 | 11h 58m 21s |
| 2025-Jul-19, Saturday | 05:54:14 | 11:53:26 | 17:52:39 | 11h 58m 25s |
| 2025-Jul-20, Sunday | 05:54:15 | 11:53:30 | 17:52:45 | 11h 58m 30s |
| 2025-Jul-21, Monday | 05:54:15 | 11:53:33 | 17:52:50 | 11h 58m 35s |
| 2025-Jul-22, Tuesday | 05:54:15 | 11:53:35 | 17:52:55 | 11h 58m 40s |
| 2025-Jul-23, Wednesday | 05:54:14 | 11:53:36 | 17:52:59 | 11h 58m 45s |
| 2025-Jul-24, Thursday | 05:54:12 | 11:53:38 | 17:53:03 | 11h 58m 51s |
| 2025-Jul-25, Friday | 05:54:10 | 11:53:38 | 17:53:06 | 11h 58m 56s |
| 2025-Jul-26, Saturday | 05:54:07 | 11:53:38 | 17:53:09 | 11h 59m 2s |
| 2025-Jul-27, Sunday | 05:54:04 | 11:53:37 | 17:53:11 | 11h 59m 7s |
| 2025-Jul-28, Monday | 05:53:59 | 11:53:36 | 17:53:12 | 11h 59m 13s |
| 2025-Jul-29, Tuesday | 05:53:55 | 11:53:34 | 17:53:13 | 11h 59m 18s |
| 2025-Jul-30, Wednesday | 05:53:49 | 11:53:31 | 17:53:14 | 11h 59m 25s |
| 2025-Jul-31, Thursday | 05:53:43 | 11:53:28 | 17:53:14 | 11h 59m 31s |
Parnaiba on Brazil map:
Cities in the same time zone America/Fortaleza
Fortaleza (Ceará), Natal (Rio Grande do Norte), Sao Luis (Maranhão), Joao Pessoa (Paraíba), Teresina (Piauí), Macau , Campina Grande (Paraíba), Crato (Ceará), Juazeiro do Norte (Ceará), Imperatriz (Maranhão), Timon (Maranhão), Mossoro (Rio Grande do Norte), Sobral (Ceará), Caxias (Maranhão), Patos (Paraíba), Sao Tome (São Tomé), Codo (Maranhão), Bacabal (Maranhão), Iguatu (Ceará), Balsas (Maranhão), Santa Ines (Maranhão), Picos (Piauí), Itapipoca (Ceará), Sao Jose de Ribamar (Maranhão), Caico (Rio Grande do Norte), Crateus (Ceará), Quixada (Ceará), Barra do Corda (Maranhão), Floriano (Piauí), Piripiri (Piauí)
Largest Populated Areas in Brazil
Sao Paulo (São Paulo), Rio de Janeiro (Rio de Janeiro), Belo Horizonte (Minas Gerais), Porto Alegre (Rio Grande do Sul), Brasilia (Distrito Federal), Recife (Pernambuco), Fortaleza (Ceará), Salvador (Bahia), Curitiba (Paraná), Campinas (São Paulo), Belem (Pará), Goiania (Goiás), Manaus (Amazonas), Santos (São Paulo), Vitoria (Espírito Santo), Niteroi (Rio de Janeiro), Vila Velha (Amapá), Vila Velha (Espírito Santo), Maceio (Alagoas), Natal (Rio Grande do Norte), Sao Luis (Maranhão), Florianopolis (Santa Catarina), Joinvile (Santa Catarina), Natal (Amazonas), Joao Pessoa (Paraíba), Olinda (Pernambuco), Teresina (Piauí), Novo Hamburgo (Rio Grande do Sul), Iguacu (Rio de Janeiro), Cuiaba (Mato Grosso)
Daylight Hours FAQ: 10 Most Googled Questions Answered
1. What are daylight hours?
Daylight hours refer to the period between sunrise and sunset. This duration changes throughout the year based on season and geographic location.
2. Why are days shorter in winter and longer in summer?
Earth's 23.5° axial tilt causes uneven sunlight distribution. Your hemisphere receives less direct sunlight in winter (shorter days) and more in summer (longer days).
3. When is the longest day of the year?
Northern Hemisphere: June 20-22 (summer solstice).
Southern Hemisphere: December 21-23.
Near polar circles, the sun doesn't set for 24 hours.
4. When is the shortest day of the year?
Northern Hemisphere: December 21-22 (winter solstice).
Southern Hemisphere: June 20-21.
5. How does latitude affect daylight hours?
The closer to poles, the more extreme variations:
- Equator: ~12-hour days year-round
- Polar regions: Midnight sun/polar nights occur
6. Why do New York and Miami have different day lengths?
Miami's lower latitude means:
- Winter days are longer than NY's
- Summer days are slightly shorter
7. When are day and night equal?
During equinoxes:
- Spring: March 20-21
- Fall: September 22-23
How fast do days lengthen/shorten?
Most rapid change near equinoxes: 2-4 minutes daily.
Slowest change near solstices: <1 minute daily.
9. Where can I check daylight hours for my city?
Reliable tools:
- Timeanddate.com
- SunCalc.org
- Photographer's Ephemeris app
10. Does daylight affect health?
Yes. Reduced winter sunlight may cause:
- Seasonal Affective Disorder (SAD)
- Vitamin D deficiency
Solution: Light therapy lamps & midday walks